Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 18 and up Women only

Using antibiotics to prevent bladder infections after Botox treatment

Official title: Prophylactic Antibiotics During Treatment of Idiopathic Overactive Bladder With Intradetrusor onabotulinumtoxinA for the Reduction of Postoperative UTI: a Randomized Blinded Placebo-controlled Trial

Run by University of Alberta · NCT04444440 · Data updated 2026-11-12

This study is testing if taking antibiotics after Botox treatment can help prevent bladder infections in women with overactive bladder.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment202 (estimated)
SponsorUniversity of Alberta
Academic / other
Locations1 site (Edmonton, Alberta)
StatusRecruiting
StartedJune 28, 2021
Main results expectedJune 30, 2028
Study endsJune 30, 2028
Registry record updatedSeptember 22, 2026
Trial IDNCT04444440 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are women aged 18 and older with idiopathic overactive bladder who have not responded to medical management.

Probably not a fit

Patients with neurogenic overactive bladder, those currently on antibiotics, or males will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the effectiveness of prophylactic antibiotics, specifically Ciprofloxacin, in reducing postoperative bladder infections following Botox injections for idiopathic overactive bladder in women. Participants will be randomly assigned to receive either the antibiotic or a placebo for three days after the procedure. The study will monitor the incidence of bladder infections and any side effects over a six-week follow-up period. Urine cultures will be collected to confirm infections, and a questionnaire will assess urinary symptoms and adverse events.

Why it matters

Potential benefit: If successful, this study could significantly reduce the incidence of postoperative bladder infections in women undergoing Botox treatment for overactive bladder.

How similar studies have gone: While the use of prophylactic antibiotics in similar surgical contexts has shown promise, this specific approach for Botox treatment in overactive bladder is relatively novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with idiopathic OAB diagnosed clinically who have failed medical management
* Female
* Age ≥ 18

Exclusion Criteria:

* Patients with neurogenic OAB (OAB with potential underlying neurologic cause - multiple sclerosis, spinal cord injury, Parkinson's disease, other)
* Contraindication to injection of Botox - hypersensitivity to any botulinum toxin preparation or to any of the components in the formulation, current urinary tract infection, symptomatic urinary retention or PVR \> 200 mL, unwillingness or inability to initiate CIC post-treatment if required.
* Contraindication to oral Ciprofloxacin - hypersensitivity or allergy to Ciprofloxacin or other fluoroquinolone, concurrently taking Tizanidine or Agomelatine.14
* Active antibiotic therapy for any indication at the time of Botox injection - increased risk of adverse reaction with combining antibiotics, reduced risk of UTI with additional antibiotic.
* Male
* Age \< 18
* Pregnant and/or breastfeeding

Where it's running

  • Urogynecology Clinic - Royal Alexandra Hospital
    Edmonton, Alberta, Canada
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.